Apparatus for forming core laminations



`lune 12, 1934. J. c. DALEY y 1,962,432

APPARATUS-FOR FORMING CORE LAMINATIONS Original Filed Aug. 18, 1930 2 Sheets-Sheet 1 i J0 5,0 50 L /5 2/ E' 4/ 2,7 g3 gli/,x32

June rl2, 1934.

J. C. DALEY APPARATUS FOR FORMING CORE LAMINATIONS Original Filed Aug. 18 1930 2 Sheets-Sheet 2 Patented June 12,1934

PATENT OFFICE Y APPARATUS FOR FOBM'ING CORE LAMINATIONS James C. Daley, River Forest, Ill., assignor to .Jefferson Electric Company, Bellwood, lll., a

corporation of Illinois originnappucmgn August 1s, 1930, seria No. 476,231. Divided and this application Decembe; 12, 1932. serial-No. 646,855

9 Claims. (Cl. 164-18) My invention relates toapparatus for forming a strip of stock into predetermined shapes, and more particularly to apparatus ifor cuttingirom sheet metal laminations which are adapted to be afterward'assembled to produce the core or magnetic circuit ofv a transformer or other electro-magnetic device. f

'I'he present invention is a division of my copending application I am aware that various devices for producing predetermined shapes have been proposed before, butin such devices the means -for removing the material from between the legs of the laminations and the means for cutting the laminations from the strip have been operable together or in one stroke. f

The apparatus of my present invention comprises means for punching oblong openings throughout the length of the strip of stock for the purpose of removing thev material from between the legs of the laminations andmeans operable independently of said iirstv means -for cutting the strip across vthe openings andbetween certain of 'said openings to form predeterminedshapes after removal of the material from between the legs of the laminations throughout the length of the strip of stock.

y By punching the openings betweenthe legs ofV and die elements is less because it is not necessary to grind these elements as frequently vas it has been where the oblong openings arecut and the severing .or the strip accomplished simultaneously. Where grinding is necessary, it may be accomplished. more easily than before. 'The punch and die elements are less .complicated to set up, their size is reduced, and fthe dangerv of shearingthese elements in setting them up'is reduced. n 1

A further and important advantage of the present invention is that I am enabled to operate the means for cutting the strip across `the openings and between certain of the openings at a.-` speed differentthan the speed of operation of the means for punching the openings between the legs `of the laminations.` The means for punching the openings` between the llegs` of the. laminations may be -used on one machine and themeans for severing the strip across the openings and between certain o! the openings may be used on a different machine. One machine may be o1' the generally vertical type andthe other of the generally horizontal type, or both may be of the vertical or horizontal types. Obviously, where one of the machines is faster than the other, one of the faster machines maylbe used withomore than one o! the slower Serial bla-476,231 iiledAugust machines.

I mid that by cutting the oblong openings or ,1 windows on a vertical type oi' machine, and severingthev stripacross the openings and between certain of the openings on machines of the horiings all vcut therein, at a rate sumcient to meet the demands of the rate at which they are handled withv a greater number oi machines for severing. the stripsacross theopenings and betweenthe pairs og openings. Another-advantage resides in the ability of the 'punch andv die elements for severing the strip across and between the openings to continue to operate incase of' disability o! the punch and die elements for cutting the oblong openings, and

viceversa. Ii' the severing punch or die means is disabled, the continued operation of the oblong opening cutting punch and die means will build iup areserve of strips from which the oblong openings have all been cut, which strips will be available when the severi-ngfdie and punch means is rendered operative, whereas, if the oblong opening cutting means is disabled, the means for 'severing the strips across and between the openings may continue in operation with this reserve.

illustrative of 'a particular practical application ofthe invention,y I have combined one vertical machine for mst cutting all of the oblong openings with two horizontal machinesfor thereyattersevering the strip across the openings and between each pair of openings.

` Other advantages will appear Iromthe following detailed description taken in connection with "the accompanying drawings, in which:

Figure 1. is a bottom plan view of the upper movable punch means for cutting the oblong openings;

Figure 2 is a' top plan view oi the lower die means which cooperates with lthe punch means of' 1 in cutting the oblong openings;

3 is a fragmentary side elevational view of the upper punch means of Figure 1;

Figure 4 is a fragmentary longitudinal section through thc lower die and stripper means taken on the line 4-4 of Figure 2, Figure 4 being positioned below Figure 3 to show the operative relation of the punch anddie means for cutting the oblong openings;

Figure 5 is a plan view of the strip of sheet metal stock partially'broken away and after cornpletion of all except the last pair of generally oblong openings;

Figure 6 is a top plan view of the punch and die or cutting elements for severing the strip across and between the openings to form the lamina` tions;

Figure 7 is a view of the punch and die means of Figure 6 partially in vertical section and partially in elevation; Y

Figure 8 is a front elevational View of the punch means shown in Figure 6; v

Figure 9 is a front elevational view of the die means shown in Figure 6; v

Figure 10 is a view similar to Figure 5 showing the manner of severing the strip across the openings and between certain of the openings after completion of said openings throughout the ylength of the strip;,and i v 'Figure 1l is a view illustrating one manner of making a core with the E'shaped laminations and rectangular strips formed by the presentinvention; j. t

Only so `much of the punch and die means is Yillustrated in the drawings as is necessary to explain the present invention,` it being understood that any details not shown'may be of lany existing `or suitable type and may vary widely=withinthe mediate legs B which are disposed centrally ibetween the outer legs 7 and'9fmaybe wider than the outer legs, as shown, andthe bases 6 are shown as substantially the same Width as the outer legs 7 and 9. c i y In making up a'transformercore, the lamina- 1 tions 5 may be stacked with the legs .78 'and 9, .upon eachother and with the bases 6 disposed alternately at opposite ends. The rectangular strips 10 cut-from the oblong openings which form the jspaces between the legs 7, 8 and 9, may be of Ilengths equal yto lengthL- (Figurell) of the i- E-shaped laminations and maybe arranged across the outer endsof theile'gsl 7, 8 and 9, as shown in Figure 1l, to form the core; Wherethe straight stripsy are used,the bases 6 need not, of course, be disposedalternately at opposite ends, but mary all be disposed at the same end, although the useof the straight strip Amay be combined with-the arrangement-of thebases'of the llaminations alternately atopposite 'endsj As is Well understood in the art,.ne`coils may be wound around the intermediate,legs'l 8 and `through the 'spaces between the intermediate and outer legs, the intermediate leg extending through the coils andthe outer legs, together with the bases 6. forming a magnetic envelope completely surrounding thc'coilsn.

The stock from which the laminations are made is in the form of continuous stri'rxs 15 of sheet niet-al.y The stripsl arevpreferably long, relatively narrow, strips,.and are substantially flat. Theymay be of any suitable or preferred gauge or thickness. Sheet iron is commonly employed and thc laminations may be punched or stamped out cold.

For the purpose of punching or stamping out the oblong openings which form the spaces between the legs ofthe laminations, the strip l5 is rst'fed by suitable means illustrated diagram matically at 16 in Figure 2 between the upper punch and lower die elements 18 and 20 of a vertical press, the strip l5 being suitably guided and fed over'the lower die element 20. The feed means at 16 forms means for positively feeding the strip of metal between the punch and die ele ments,`and the strip is advanced step by step, the steps of advance alternating with the strokes of the press, so that after each stroke the strip will be advanced and positioned for the next stroke. The lower die may be fastened down upon the bed ofthe press or other support. It comprises the die proper which may be secured by pressed nt or otherwise in an opening in a die block or plate which may, in turn, be fastened down upon the bed of the press in any suitable or preferred manner.

One means for guiding the strip l5 may comprise shoulders or flanges 21 formed along the opposite sides of the die element 20.y This, of course, may vary. For example, the guide means may be formed on the guide block or plate, above referred to, or, as a matter of fact, may be separate from either of these members if found desirable.

The die element 20 is provided with two parallel oblong or generally rectangular die openings 22, thelengths of which are disposed transversely across'the path of 'movement of the strip v15 between the punch and die elements, and with two pairs -of relatively small die openings 23, 23 and 24, 24. The relatively small dieopenings 23 and 24 arepreferably alike and each, preferably, has a flat inner side 25 and is rounded at its outer side at 26. 'Thev openings 24 areV at the longitudinal median line o f the s trip l5 in its movement between the punch and die' elements, and the openings 23 are at the outer edge of the strip to cut the notches 27 -centrally between the ends of the outer edges of the bases 6 of the'laminations 5, as shown in Figures 5 and 11, The relatively small die openings 24 are so larranged as to form holes or perforations along the longitudinal median line of the strip, which holes or perforations form the notches 28, one in the outer longitudinal edge of each of the straight pieces -16 which are stamped out by the'die openings 22 and the cooperating punch elements 39.

l The outer ends ofthe openings 23 preferably extend outwardly of the inner guide edges of the shoulders 4or flanges 21 to assure opening of the lllll notches 27 `:formed thereby from theouter edges Theoblong die openings 22 and the relatively small openings23 and 24 vare all bounded by relatively sharp cutting or shearing edges-as is well understood in the art. The die element 20 is for the purpose of clarity shown as made up in one or an integral piece, but it may,4of course, in practice be made up of aplurality of straight stripsr and blocks arranged and suitably interlocked to form the desired die openings; It is usually desirable to avoid angular pieces in making upthedie proper and to-make the. die element upv at least as completelypaspossible of straight oblongpiecesso that integral angular cutting edges and corners are, avoided.

The die element' 20 is also provided with a pair i of openings 30 for receiving aligning pins 31 on thepunch element 18, and with an opening 32 for receiving a circular punch pin 33 on the punch element 18. The opening 32 is on the longitudinal median line ofthe strip of metal l5 in its passage between the punch and die elements and is disposed to form the relatively small openings 34V (Figures 5 and l0), one centrally between each pair of openings 35 from which the straight pieces 10 are punched. The purpose of forming the openings34 will appear as this description proceeds. One of the openings 30 is disposed adjacent each of the inner guide edges of tire guide 21, andthcse openings 30 are in transverse alignment along an imaginaryline centrally between the die openings 22. l

The cooperating punch element 18 is reciprocable up and downlinto and out of operation with the lower die element 20. It comprises a blocki38 in which the upper ends of the punch members 39 and punch pins 40 are secured. This block 38 is mounted upon the vertically reciprocating carriage of the press. The punch members 39 are bounded by relatively sharp cutting edges and conform peripherally with the die openings 22, whereas the punch pins 40 are likewise bounded by relatively sharp` cutting edges and conform peripherally with the die openings 23 and `24. The downward stroke of the punch carriage or block 38 moves the generally rectangular or oblong punch members 39 down into the mating die openings 22, and the punch pins 40 down into the mating die openings 23 and 24 and, upon the upwardmovement of the punch carriage, the punch elements are elevated from the die openings to substantially the positions shown in Figures 3 and 4. `The aligning and positioning pins 31 are also secured to the block 38, asis the punch pin 33, and these pins move down intovthe openings 30 and 32 upon the downward stroke of the punch element and, upon the upward stroke of thepress, are withdrawn and elevated 'from these openings, as shown in Figures 3 and 4.

The sheet metal strip 15 is fed `between the punch and die element in the direction indicated bythe arrow in Figure 2. `The machine shown being of the vertical type, the path of feed is in a generally horizontal direction.

Assuming that the metal strip 15 is initially entered with its inner end to the right ofI the right hand opening 22 (Figure 2) a distance substantially equal to the width of one of the outer legs 7, 9 of the resulting laminations, the initial stroke of the press will move the punch. pins 40. and the pins 33 down through the strip and Yinto the mating openings. 23, 24 and 32, cutting out the two openings 28 along the longitudinalmedian line of the strip, the two notches 27 at the outer sides or longitudinal edges of the strip and the opening 34. Upon vthe succeeding upward stroke of thelpress', the punch pins 40 and the punch pin 33 are withdrawn from the die openings and thefeeding mechanism 16 operates to feed positively the strip 15 forwardly sufficiently to dispose the'notches 27 in substantial register with the die openings 30. i

Then upon .the succeeding dpwnward stroke of the press, Vthe punch members 39 pass through the strip l5 and down into the die openings 22 punchingkout the oblong straight `pieces yl0 and` forming the parallel openings 35 `transversely across the path of movement of the sheet metal strip. In the downward movement of thepunch,I the aligning and positioning pins 31 enter the notches 27 rst, and the lower ends of these pins, being tapered as shown in Figure 3, will align the stock and hold it in position so that the oblong openings 35 will be properly related to the next pair of oblong openings and so lthat these oblong openings will be punched in the desired relation with lrespect to the openings 28, notches 27 and openings 34.

Simultaneously with the punching of the openings 35 the punch pins 40 and punch pin 33, together with the die openings'23, 24 and 32, punch the openings 28, notches 27 and openings 34 in the next succeeding area of the metal strip, as in dicated at the right hand end of the strip shown in Figure 5. It is understood that in succeeding operations, when the punch` element is withdrawn from the die element, the feeding mechanism 16 feeds the strip 15 longitudinally a distance equal to the distance from a point .centrally between one pair of openings 35 to a point centrally between the next succeeding pair of openings, or a distance equal to the distance from the dot and dash line a in Figure 4 to the dot and dash line b, the dot and dash line b being `disposed lto the left of the left hand die opening 22 y(Figure 4)l a distance substantially equal to the width lof one of the outer legs of the resulting laminations. i v v The oblong'opening punching operations are continued until the successive groups or pairs of oblong openings 35 are completed throughout the length of the strip 15 and then the strip is severed longitudinally, in this particular embodiment, across the openings 35 and also transversely, in this particular embodiment, between each pair of openings to form the E-shaped bodies or laminations as shown in Figure 10. i

' Suitable means may be provided for stripping the stock from the punch element. The stripper may be in the form of a stripper'plate 48` (Figure 4) rigidly secured in spaced relation over the die element 20 and provided with'openings 49,

50 and' 5l, corresponding with the die openingsv 22, 23, 24 and 32, respectively, so that vthe respective punch elements may pass through the stripper plate 48 and into the respective die open.- ings. The stripper plate 48 also has openings 52 to permit the aligning and positioning pins 31 to pass through the plate and into the openingsI 30. The particular stripperv means may vary widely. In the illustrated embodiment, the plate 48 is mounted upon the shoulders or anges 21 and held in spaced relation over the die element thereby.

For the purpose of severing the strip across the oblong openings 35 and also between certain o1" said openings the strip `15, after completion of all of the oblong openings 35 throughout the length of the strip, is fed between punch and die elements and 56 shown in Figures 6, 7, V8 and 9.

V'I'he punch and die elements 55 and 56 may constitute theipunch and die elements of a generally horizontal type of press, it being understood that although this particular punch and die` means is shown in Figures 6, 7, 8 and 9, as acting horizontally, the punch and die elements for severing the strip after completion of the vopenings forming the spaces between the legs of the laminations may be inclined to the horizontal as desired.

The die element 56 comprises the die` proper 57 secured `in 4thedie block` 58 which is, in turn, secured tothe bolster 59 of the press. `The die proper 57 is provided with two generallyrectangular ,die openings 60 which correspond with the.

outer contours of the laminations 5, and are the depended upon to assist gravity by hand in'feedyopenings for blocking out or forming the outer contours of the laminations. These openings are bounded by relatively sharp cutting edges and ure positioned in staggered relation, one at each side of the center of the generally'vertical path of travel ofthe strip 15 between the punch and die elementsi55 and 56. The openings 60 preferably and 56 by guide'shoulders or iianges 65 formed r along the opposite sides of the die element 56. The inner guide edges of the guide are preferably disposed at the outer vertical edges of the die vopenings 60, or the outer edges of these openings may extend outwardly slightly of the guide edges ofthe guides 65 to assure blocking' out of the laminations through the opposite edges of the sheet metal strip. f

i The-cooperating punch means 55 is reciprocable generally horizontally into and out of cooperation with the die element' 56. It comprises a punch holder '70, `a punch plate 71 and punchl members proper 72.' The'punch members 'l2 are bounded by relatively sharp cutting edges and are of generally rectangular configuration conforming peripherally with the mating dieopenings 60. They may be secured tothe plate '71y as indicated at '73, and the plate may, in turn, be-'secured to the punch holder as indicated at 74. The generally horizontal stroke of the punch element toward the die element movesthe punch members y'12 into the mating die openings 60' and, vupon' the outward movement of the punch element,` the punchmembers are withdrawn from the die'openings asv shown in Figures vtand `7.

vThev strip of sheet metal stock 15 with all of the opening35 punchedrtherein is fed generally verticallyl between the punch and die elements 55 and 56 in the direction indicated by the arrow lin Figure 7. The feed may be by gravity, orat least partially by gravity, the operator usually being ing thestrip between the punch and die elements 55 and 56; 'Stop means '76 is lprovided for stopping the end of the strip 15l atV the lower cutting edge of the lower die opening 60, or just 'slightly' ahead of said lower edge to'assure completer-blocking out of the lamination upon operation ofthe press. With the lower end of the metal strip thus positioned, the vfirst stroke of the punch into en- .gagement with theA die element punches out 'two E-shaped laminations in staggered relation along" the lines 78, '19, 80', 81 and 82 of Figure 10. At the same time the other lamination 15a is freed upon the initial blocking operation upon the strip and this lamination may drop out generally vertcally from the face of the die element 57.

Upon completion'of this blocking'out operation;

the lower end of the strip is formed by the outv edges 82, 81 and 79, and, after withdrawing the punch element from the ldie element, the strip is fed forward a distance substantially equal to the length L of the lamination whereuponthe succeeding stroke blocks out two staggered E-shaped laminations similar to the two laminations blocked out in staggered relation upon the first stroke of 'the press. vthat the staggered E-shaped bodies will be sepa- Athe punch member 72 and die openings 60.

Obviously the small openings 34 assure rated at all times at the meeting inner corners of It is io be understood that the outer longitudinal edges of the metal strip may be cut to shape independ- 'ently of the punching operations herein described.vv

The blocking out punch and die elements sever the strip longitudinally along the median line of the strip and across the transverse oblong openings 35 centrally between the opposite ends of `these openings, and also transversely between each pair of openings along the lines 79, and 82.

For the purpose of assuring proper positioning of the metal strip with its oblong openings 35 with respect to the `'punch members 'I2r and die openings 60, each of the punch members '12"is' provided with a generally rectangular pilot or positioning member 84. These members 84 are in the form of blocks disposed parallel and transversely elongated with widths substantially equal tothe width'of the oblong openings-35 and the opposite'sides 85, and one end of veach block at 86 is preferably-tapered downwardly as shown in Figure 8 so that when theopenings 35 are ydisposed between lthe punch and die elements 55 and'56 the outer narrow ends of the blocks will enter the openings 60 in movement ofthe punch element into cooperation withthe die 'elements and'inspite of lack of exact positioning of the strip 15.v `Then' upon completion of'th'c punching'stroke, the tapered ends of the blocks will pilot the stock to proper position and these blocks 84, upon completelyA entering the openings 35, will assure such position vand retain thesame' in the operation of the' press,'it bein,r ',llnderstood that the tapered edges 85 cooperate with the opposite longitudinal edges of the openings 35 and that the tapered ends 8 6'cooperate with' the ends of the openings* 35 in the positioning action. The blocks 84 may be rigidly'securedto'the face of the punch element 'Iz'by means of screws 87. vSuitable means maybe'providedA for stripping the stockv from the punch element of the press. The stripper may be in the vform of a'stripper plate 88 'rigidly secured in spaced relation over the'diepelements and provided with openingsv 89 *correspondingA with vthe Vdie openings to permit movement of theV punch elements' '72 through the stripper plate 88 into the respective die openings 50. In the illustrated embodiment, the stripper plate88 is secured by. any suitable means, such as the bolt shown in dotted lines in AFigure '6, to the guidev iianges or `shoulders 65 and is spaced from'the face' of the die proper 57 by means of the'anges 65.

The notches 27 formed'in the bases of the laminations 5 andthe notches 28'formed in one edge of each of the straight pieces 10 are for purposes of assembly. When, for vexample, the laminationsfareassembled as shown in Figure 11, these notches 2,'7'land l28'irn`a1ybe'disposed to receive thevposts or fthe Shanks 'of theA vscrews or other means usedin binding the laminationstogether. Itis vto befunder'sto'od that the oblong openings 35 lmay be stampedout with their lengths 'disposed longitudinally of the strip instead of transversely ofthe strip and that, instead of punching only onefpair of openings 35 with each stroke of thep're'srs, any desired number of pairs of such openings may b'epunched out upon each stroke of the press. Where more than one pair of such openings are stamped uponeach stroke, the means for independently cutting the laminations. from thestripwillbe modified to cut out a correspondingly increased number ofl laminations upon each stroke of the severing or blanking out press. The number of laminations blanked out or formed upon each stroke may vary widely within the scope of the present invention, it being contemplated as entirely practicable to form from two to sixty-four laminationsupon each stroke of the punch and die elements illustrated in Figures 6 and 7. In the application, of which the present application is a division, I have shown several illustrative manners of cutting more than one pair of oblong openings from the strip upon each stroke of the punch means for removing the material between the legs of the laminations and the mannerof cutting out a relatively large number of laminations Vupon each operation of the means for cutting or blanking the laminations from the strip. It is to be understood that the apparatus of the present invention may be modified within the scope of the appended claims to carry out any of the methods disclosed in the parent application, and that other modifications of the present invention are contemplated.

The advantages of iirst forming all of the oblong openings throughout the length of the strip of stock and thereafter severing the strip across vand between these openings to blank out the E-shaped body and the advantages of the other aspects of the present invention are fully set out at the outset of this specification.

I claim: 4

1. In combination, cooperating and relatively movable punch and die elements for punching by successive operations oblong openings throughout the length of a strip of stock, a pair of generally rectangular block punches operable independently of the operation of said punch and die elements and by successive operations cutting the strip across the oblong openings and between certain of said oblong openings to form predetermined shapes after completion of said openings throughout the l length of the strip, said block punches being positioned in staggered relation, one at each side of a line through the centers of said openings, and means on the second independently operated punch members cooperating with certain of the openings made by the rst punch members to align the material for the second independently operated punch members.

2. In combination, die means having a pair of oblong die openings, a pair of oblong punch elements cooperating with said die openings for punching pairs of oblong openings within a strip of stock and by successive operations throughout the length of said strip, a pair of generally rectangular block punches positioned in staggered relation and operable independently of said die means and said first punch elements for severing the strip by successive operations across the oblong openings and between pairs of oblong openings to form predetermined shapes after completion of the oblong openings throughout the length of strip, and means on the second independently operated punch members cooperating with certain of the openings made by the first punch members to align the material for the second independently operated punchv members.

3. In combination, a die having parallel enclosed die openings, a punch having punch projections mating with said die openings, said punch and die being adapted for cutting successive oblong openings entirely within a continuous strip fed therebetween, a die independent of said first die and having rectangular die openings disposed in staggered relation, 'a punch having punch projections mating with the die openings of said last die for severing the strip across said oblong openings and between the successive openings after completion of all of said oblong openings throughout the length of the strip, and means on said last punch cooperating with certain of the openings made by said first punch to align the material for the second punch.

4. Die press means for cutting lamination bodies from a continuous strip comprising cooperating vertically acting punch and die members for cutting oblong openings entirely within the strip for the purpose of removing the material from between the legs of the lamination bodies, generally horizontally acting punch and die members for cutting the lamination bodies from the strip after completion of the cutting of all of the oblong openings throughout the length of the strip, said last punch and die members being of rectangular configuration disposed in staggered relation, one of said rectangular punch and die members operating upon the strip at each of the opposite ends of the oblong openings, and means on the generally horizontallyacting punch cooperating with certain of the openings made by the vertically acting punch to align the material for said horizontally acting punch.

5. In combination, a die having, parallel enclosed die openings, a punch having punch projections mating with said die openings, said punch and die being adapted for cutting successive groups of oblong openings entirely within the width of a. continuous strip fed therebetween said die having additional relatively small openings and said punch having punch pin means for punching notches in the opposite longitudinal edges of the strip and notches in the edges of the straight pieces punched out in forming said oblong openings.

6. In combination, a pair of generally rectangular punch members disposed in staggered relation, mating die openings for said punch members, means for punching a hole in a strip of stock ahead of said punch members and die openings in the path of movement of the stock therebetween, and means for advancing the stock to position the hole punched by said last means in intersecting relation to the adjacent corners of said punch members whereby upon the punching operation of said members the laminations will be blocked out with their corners intersecting said hole.

7. In combination, die press means including a die having die openings, punch members cooperating therewith, means for feeding a continuous strip therebetween, said punch members forming an aligning hole in said strip and o blong pairs of openings transversely of said strip upon successive operations of said die press means, a second die having die openings, punch members cooperable therewith and actuated'independently of said first-named punch members, and means on the second independently operated punch members cooperating with. certain of the openings made by the first punch members to align the material for the second independently operated punch members, said strip being entirely converted into predetermined shapes upon operation of said second punch members.

8. In combination, die press means including a die having die openings, punch members cooperable therewith, means for feeding a continuous 'strip therebetween, said punch members forming an aligning hole in said strip and oblong pairs of openings transversely of said strip upon successire operations of said die press means, a second die having die openings` punch members cooperable therewith and actuated independently of said first-named punch members, stop means for preventing passage of any portion of said strip through said die, said strip being entirely converted into predetermined shapes `upon operation of said second punch members, and means on the second independently operated punch members cooperating with certain openings made by the rst punch members to align the material for the second independently operated punch members.

JAMES C. DALEY. 

